Year	Square Kilometers
1990	2870
1991	3033.1
1992	3196.2
1993	3359.3
1994	3522.4
1995	3685.5
1996	3848.5
1997	4011.6
1998	4174.7
1999	4337.8
2000	4500.9
2001	4526.5
2002	4552
2003	4577.6
2004	4603.1
2005	4628.7
2006	4661.8
2007	4694.9
2008	4727.9
2009	4761
2010	4794.1
2011	4827.2
2012	4860.3
2013	4893.3
2014	4926.4
2015	4959.5